I'd like to see more people cosplaying from the Wheel of Time series. Or if possible, and even more obscure, would be The Blending or Troy Game Series. There are a lot of good fantasy books that would make great costumes, or so I'd think. The problem would probably be recognition, and most people thinking it's a random fantasy or medieval costume.

My loverboy has both an Aiel Warrior and a Mat Cauthorn tucked away in his closet. :> WoT is a very cosplay-able series - I'm so surprised that more people don't cosplay from there!